PLATE XXI. 



I''ig8. 1-3. — Skull aud vertebras of a specimen of Crocodilus affiiiie. From Smith's Fork of Green Eiver, 



Wyoming. Tliree-eighths natural size. Page 162. 

 Fig. 1, la. — Skull from above aud from tlie side. 

 Fig. 2. — Lumbar vertebra from front; a, from below. 

 Fig. :i. — Another lumbar from below. 

 Figs. 4-8.— Portions of skull and vertebrae of Crocodilus clavis. The typical specimen from 'the Washakie 



basin. Page 157. 

 Fig. 4,— Parts of right maxillary and premaxillary boues from below. 

 Fig. 5. — Part of right mau<libnlar ramus from above. 

 Fig. (). — Cervical vertebra; a, from below; 6, from front. 

 Fig. 7. — Anterior view of a dorsal vertebra. 

 Fig. 8. — Another dorsal; a; from below; b, from behind. 

 Fig. 9. — Pelvis of second Crocodilus claris, tigured in the next idate, right side. Page 157. 



